Links for products Answered

Placing commercial links in a "fake" Instructable -- i.e., something obviously written in order to promote sales or redirect Web traffic to a commercial site -- violates the terms of service to which you agreed when you created your account. Such an I'ble will be flagged as SPAM, removed from the site, and your account may be closed.

If you sell a kit version of your own, original project, (on Etsy, for example), then providing a link to your kit at the end of your I'ble is perfectly acceptable, and even encouraged in the case of very populat projects. Your project should still be constructable by a reader without having to buy your particular product (so just reposting the instruction sheet is not acceptable).